Rocker centering device



Feb. 19, 1929. l 1,702,269

H. M. PFLAGER ROCKER CENTERING DEVICE Filed Oct. 5l, 1927 Stro/c1424.#

Patented Feb. 19; 1929.`

` UNITED STATES n L y 1,702,269 PATENT oFFIE.

IIAEEY M. rmeEE,` or sr. Louis, IIIssoUEI, AssIeNoa ro coIIiIoNwEaLrII STEEL comm, or GRANITE cImY, ILLINOIS, a conrommIoN or NEW .IEEsEY.'"`

noem cEN'rEnINe DEVICE.' f

.Application Med October 31, 1927. Serial No. 229,906.

My invention relates to railway rolling stock and consists in a novel rocker bearing structure adapted particularly to be used as a part of the centering device on a railway truck whereby the truck bolster, or other member having horizontal movement relative to the truck, is lifted when the same moves laterally from-its normal position and reference is made to Woodard Patent No.

1,060,222 as embodying a\ description of this general type of rocker bearing centering device.

duce the cost of installation and maintenance of such devices, and this object is attained by providing bearing elements on the rocker and on the rocker supporting portion of the truck, which elements are separate from the rocker and truck frame structure and are renewable.v The use of such elements eliminates the necessity of machiningthe rockerl and rocker bearings to the extent previously re-y quired and when the bearing elements are unduly worn, one or more may be replaced without replacing the rocker or the rocker carrying portion of the truck frame.

Another object of my invention is to provvide a rocker mounting which may be adjusted to different positions to present new rocker supporting faces, thereby increasing the useful life of the device without any replacement in whole or in part. Y

In the accompanying drawings which illustrate a selected embodiment of my invention- Figure 1 is a transverse vertical section through one-half of a locomotive truck equipped with my invention and istaken substantially on the line 1-1 of Figure 2.

,. Figure 2 is a longitudinal vertical sectionA through the truck and is taken substantially on theiline 2-2 of Figure 1, the equalizer bars and truck springs being omitted to more clearly illustrate my invention. y

The truckillustrated is a four wheel pony trucl but it will be understoodthat the invention is applicable to two wheel trucks of this type and to trailer trucks and elsewhere. The truck wheelsrl, axles 2, journal boxes 3, pedestals 4, wheel pieces 5, equalizers 6, springs l, 7, tie bars 8, and bolster 9 may be of any desired construction and form no part of my present invention. l i

The wheel pieces 5 of the framelare connected b transom elements comprising vertical wa ls 10 and a transverse web 11 connecting the lower portions of walls 10. Web 1 1 1s provlded with one or more upstanding rlbs '12, 13 and these ribs are adapted to cooperate with the adjacent wall 10 to mount suitable pins 14 which may be inserted through wall 10 from the outside of the latter and may be retained in position by the engagement of each pin head 15 by a removable bolt 16 which is detachably mounted in flanges 17 formed'on the outer face of wall 10. 65 Rocker members 18 are mounted upon pins 14 and in the preferred form each rocker mem- Dne of the objects of myinvention is to re- Y ber comprises a pair of rockers located respectively on opposite sides of the transverse center line of the truck but interconnected by an mtegral portion 19. Each of theserockers is provided with a pair of concave recesses spaced along its base and each of these recesses is preferably lined with a relatively hard steel wear plate 20 preferably secured to the body of the rocker by spot-welding as indicated at W.

Itis obvious that the above construction eliminates the necessity of machining semicircular recesses on the truck :traine or the provision of heavy machined bars which must be applied to the trucky frame to seat the rocker. The construction also eliminates the formation of journals on the bases of the rockers, whichjournals must be machined in 85 order to properly iit in their bearings.

Aside from` the elimination of machining of rocker bearings fororiginal installation, my device is vadvantageous because ofthe fact that the wear -plates 20 may be renewed at intervals without renewing the rockerand the pins 14 may also be renewed at intervals without renewing any other part of the device. The pin heads 15 may be made circular, in which case the pin 14 may rotate on its seat and the circumferential wear on pin would be evenly distributed but my preferred construetion is to make the heads 15 rectangular or some other non-circlar shape whereby the 100 pins 14 will be held against rotation on their axes. With thisarrangement the pins nay be withdrawn at suitable intervals and given a half or less turn about their axesto present a new rocker supporting face.

In the construction shown theinner in supporting rib 12 surrounds the inner en of the pin and an intermediate rib 13 engages the lower face only of the pin immediatell:l below the pin engaging portion of the roc er. It 110 will be understood that this intermediate rib er, and `means for rotatlon in var1ous positions.

may be eliminated if desired or the entire survit'ace of web 1.1 beneath the pin may he machined to seat the pin.

These and various other modifications in the details of my invention may be made without departing trom the spirit thereof, and I contemplate the exclusive use of suchA variations in the structure as tall within the scope of my claims.

I claim:

1. In a rocker bearing for a railway truck, an element on the truclr trame, a rocker, a cylindrical pin applied tosaid element and forming a bearing for said rocker, and means securing said pin to said element.

2. In a roclrer bearing for a railway truck,

an element on the truck frame, a rocker, and a renewable pinextending through said element and forming a bearing for said rocker.

3. In a rocker bearing for a railway truck, an element on the truck frame, a rocker, a cylindrical pin rotatably mounted on said element and forming a bearing tor said rocker, and means securing said pin to said element.

4. In a rocker bearing for a railway truck,`

an element on the truck frame, a rocker, a cylindrical pin rotatably mountedon said element and formin a bearingfor said rockolding said pin against 5. In a rocker bearing for a railway truck, an element on the truck frame, a. rocker having a concave recess, a renewable concave wear plate seated in said recess, and a renewable pin mounted on said element and supporting said `rocker throughvsaid wear plate.

6. In aV railway truck, a frame having spaced vertical members, a pin seatedl in said members, and a rocker having a recess in its base for mounting the rocker on said pin.

7. In a railway truck, a frame element havingvspaced vertical members, and a rocker supporting pin seated in said members, one of said members surrounding said pin and another of said members engaging only the underside of said pin. v

8. In a railway truck, a frame element having spaced vertical members and a rocker supporting pin seated in said members and provided with a non-circular head, one of said members surrounding said pin and another of saidy members engaging only the underside of said pin, and a ange on one of said members itor engaging the' side of said head to preventrotation of said pin.

9. Ina railway truck, a frame element having spaced vertical members and a rocker "supporting headed pin seated in said members, a flange on one of said members entend ing past the side ont said head, and an element detachably secured to said dange to engage the end of said head to prevent accidental removal ot said pin from said members.

10. In a railway truck, a frame including Y 11. In a railway truck, a frame including a vertical transom wall, a horizontal web eX- tending inwardly from the lower portion of said wall, an upstanding rib on said web spaced from said wall, and a pin inserted through said wall and rib and adapted to support a rocker bearing between them.

12. A railway centering device bearing member comprising a rocker having a recess and a renewable wear plate of relatively hard material secured in said recess.

13. A railway centering device bearing member comprising a rocker having spaced recesses along its base and separate renewable plates of relatively hard material seated in said recesses.

14. A railway centering device bearing member comprising a rocker element, and renewable wearing elements of curved contour attached to the base of said rocker element and adaptedto engage a supporting surface.

15. In a railway truck, a frame element having spaced vertical members and a rocker supporting 'pin seated in said members and provided with a non-circular head, and a flange on one of said membersfor engaging the side of said head to prevent rotation of said pin. 

